Problems about weather system in senior high school geography

The anticyclone has the highest air pressure at its center and gradually decreases outward, which is also called high air pressure. When the air in the anticyclone spreads around, it forms a downward airflow. Therefore, the weather in areas controlled by anticyclones is generally good.

I remember an example in the geography book. The crisp autumn weather in northern China is a special case of anticyclone.

The other three will form rainy weather, and the cold wave is the cold front.

A cold front is what people often call a cold air front. It is Depth Charge with cold air heading south, and it is the most common weather system that affects China, especially in winter. Every few days in winter, a cold air invades the inland from northwest and north China. When the cold front crosses the border,

It will be accompanied by the increase of northerly wind, the increase of air pressure and the decrease of temperature, sometimes causing rain and snow, and even heavy rain in summer. Under normal circumstances, after the cold front crosses the border, the local area will be controlled by cold high pressure and the weather will become clear.

The cold front is the strongest in winter, which can often directly drive South China and South China Sea, resulting in cold wave weather. The cold front in summer is weak, mainly in the north, and it often brings thunderstorms. The front is formed because the cold and warm air meet, and the cyclone air moves inward, and the space inside is getting smaller and smaller, so when they meet, the anticyclone air moves outward, and the divergent air flows are farther and farther away, so it is not easy to meet. Draw only the movement of cyclone and anticyclone airflow. Of course, it has something to do with high and low air pressure, and the content is very profound. That's all you need to understand.